EP 3933966 A4 20220608 - NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Title (en)
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Title (de)
SEKUNDÄRBATTERIE MIT WASSERFREIEM ELEKTROLYT
Title (fr)
BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX
Publication
Application
Priority
- JP 2019035868 A 20190228
- JP 2020006226 W 20200218
Abstract (en)
[origin: EP3933966A1] The purpose of the present invention is to maintain good electric contact between a surface of a negative electrode core that composes an outer peripheral surface of an electrode body and an inner surface of an outer can, and to suppress increase in internal resistance and variation in resistance value. The non-aqueous electrolyte secondary battery which is an example of an embodiment of the present invention includes an electrode body around which a positive electrode and a negative electrode are spirally wound via a separator, a non-aqueous electrolyte, and a bottomed cylindrical outer can that accommodates the electrode body and the non-aqueous electrolyte. The negative electrode has a negative electrode core and a negative electrode mixture layer that is provided on the surface of the negative electrode core. The electrode body has, on the outer peripheral surface, an exposed portion where the surface of the negative electrode core is exposed, and the exposed portion is in contact with the inner surface of the outer can. The non-aqueous electrolyte comprises 0.1 to 1.0 mass% of a diisocyanate compound.
IPC 8 full level
H01M 4/13 (2010.01); H01M 10/0567 (2010.01); H01M 10/0569 (2010.01); H01M 10/0587 (2010.01); H01M 50/107 (2021.01); H01M 50/531 (2021.01)
CPC (source: EP US)
H01M 10/0431 (2013.01 - EP); H01M 10/0525 (2013.01 - EP); H01M 10/0566 (2013.01 - US); H01M 10/0567 (2013.01 - EP); H01M 10/0569 (2013.01 - EP); H01M 10/0587 (2013.01 - EP US); H01M 50/107 (2021.01 - EP US); H01M 50/531 (2021.01 - EP US); H01M 2300/0051 (2013.01 - US); Y02E 60/10 (2013.01 - EP); Y02P 70/50 (2015.11 - EP)
Citation (search report)
- [X] US 2013330609 A1 20131212 - SAWA SHUHEI [JP], et al
- [X] JP 2014022191 A 20140203 - MITSUBISHI CHEM CORP
- [X] US 2011143207 A1 20110616 - ARORA PANKAJ [US], et al
- [Y] WO 2018193771 A1 20181025 - MURATA MANUFACTURING CO [JP]
- [Y] US 2005031950 A1 20050210 - MAEDA TAISHI [JP]
- See references of WO 2020175232A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3933966 A1 20220105; EP 3933966 A4 20220608; CN 113454809 A 20210928; JP WO2020175232 A1 20211223; US 2022140390 A1 20220505; WO 2020175232 A1 20200903
DOCDB simple family (application)
EP 20762927 A 20200218; CN 202080014656 A 20200218; JP 2020006226 W 20200218; JP 2021502012 A 20200218; US 202017431490 A 20200218